// Copyright (c) 2023 Presto Labs Pte. Ltd.
// Author: tianqiang

#pragma once

#include "coin2/exchange/base/order/rate_config.h"
#include "coin2/exchange/base/order/rate_tracker.h"

namespace coin2::exchange::bittrex::api_util {

class BittrexRateTracker : public coin2::exchange::base::order::IRateTracker {
 public:
  using ActionType = coin2::exchange::base::order::IRateTracker::ActionType;
  using RateLimitReportWriter = coin2::exchange::base::order::RateLimitReportWriter;
  using RateTracker = coin2::exchange::base::order::RateTracker;
  using RateConfig = coin2::exchange::base::order::RateConfig;
  using RateLimitInfoSpotBittrex = coin2::exchange::order::RateLimitInfoSpotBittrex;

 public:
  explicit BittrexRateTracker(
      const MarketExchangeApi& mea,
      const coin2::exchange::order::OrderConnectionConfig& cfg);

  void SetRateLimitInfo(int32_t rate_limit, int32_t rate_limit_remaining) override { CHECK(false); }
  void Push(int32_t num_reqs, int64_t timestamp, ActionType action_type) override;
  bool HasEnoughRateLimit(int64_t timestamp, ActionType action_type) override;
  void ParseRateLimitInfo(const std::shared_ptr<AsioHttpContext>&, ActionType) override {}
  void SetRateLimitInfoString(const google::protobuf::Message* message) override;
  void WriteRateLimitReportMessage(OrderLoggerCB callback) override;
  double GetMaxRateUsedRatio(int64_t timestamp, ActionType action_type) override;
  void UpdateEnableTime(int64_t enable_time) { enable_time_ = enable_time; }

 private:
  void InitRateTracker(
      RateLimitInfoSpotBittrex* rate_config,
      std::string_view mea_str,
      std::string_view example);

  double GetMaxRateUsedRatio(const std::unique_ptr<RateTracker>& rate_tracker, int64_t timestamp) {
    double rate_used_ratios = 0.0;
    if (rate_tracker) {
      auto max_reqs = rate_tracker->MaxReq();
      auto remaining = rate_tracker->GetRemaining(timestamp);
      if (max_reqs > 0) {
        rate_used_ratios = 1.0 * (max_reqs - remaining) / max_reqs;
      }
    }
    return rate_used_ratios;
  }
  bool CheckEnableTime(int64_t timestamp, ActionType action_type);
  bool CheckRateLimit(int64_t timestamp, ActionType action_type);

 private:
  int64_t enable_time_ = 0;
  std::unique_ptr<RateTracker> rate_tracker_req_all_;
  std::unique_ptr<RateLimitReportWriter> rate_limit_report_writer_ = {};
};

}  // namespace coin2::exchange::bittrex::api_util
